2009 POLARIS Sportsman 550 EFI XP with EPS, Most Xtreme Performing ATV with Electronic Power Steering. Featuring class-leading power, quicker accelleration, easier steering and the smoothest rider in Sportsman. history. * EPS: With 30% more power assist than the competitors have, plus Variable Assist for easier steering effort at lower speeds and more responsiveness at higher speeds, it's the best power steering on the market. * Anti-Kickback Steering: Takes the bite out of rocks, ruts and stumps because it has the longest A-Arms and largest diameter wheels on the market, so we could move the steering axis to near the neutral center of the tire * New Ergonomics: Longitudinally mounted engine allows XP to be narrower at the knee and ankles, for a more nimble feel. Floorboards are 33% wider for extra comfort. * 14 in. Aluminum Wheels: Largest wheels on a stock ATV. Premium 14 in. cast-aluminum spoke wheels, with 26 in. Carlisle Terrathon tires. (Black stamped steel wheels on camo model.) * Rolled IRS: New rolled IRS features shock with a 40 tipback, and long travel (10.25 in. (26 cm)) for the smoothest Sportsman ride ever. * On-Demand AWDS: Automatically engages when the rider needs more forward traction, delivering full torque to all four wheels. Reverts to 2WD when AWD is no longer needed. * New Digital Instrumentation: Digital speedometer, tachometer, odometer, two trip meters, hour meter, fuel gauge, clock and service indicators. * New Roller Clutch: New roller-driven clutch reduces friction and provides smoother, faster clutch respons and back shifting. Higher "Low" gear, with speeds up to 39 mph in low range. * Dual A-Arm suspension: New front suspension has longer control arms, class-leading travel (9 in. (22.9 cm)) and geometry that creates anti-kickback steering. * 20% larger Radiator: Larger radiator enhances performance, is almost 5 in. higher to keep it out of the mud, and angled 50 steeper for easy cleaning. * Active Descent Control: Provides 4-wheel braking when vehicle is in AWD, works together with Sportsman's Engine Braking System (EBS) to give you optimum control when moving down hills. * Most powerful 550-class engine in Sportsman history. 550 cc Single, rubber-mounted for low vibration, with EFI for fast starts and consistent performance in varying altitudes and temperatures.